@v4friend I have a Tobii 4C, and find the headpose not reliable enough - the main issue being that when I look left and right, a pitch up or down respectively is produced - this does not happen if I hold the tracker in the middle of my monitor, and the effect reverses when I put it at the top. So I want to hookup the gazepoint similar to how the EyeX plugin works, but I can't find their source code. I want to write this (a freely contributed tracker plugin or modification to the existing 4C plugin)...